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Phenom x4 motherboard/ram selection assistance 8x vs 16x pci-e?

Hello! I'm looking to build a new system soon. I've decided to go with;

Phenom X4 BE saving a few bucks from the 965) http://www.newegg.com/Product/Product.aspx?item=N82E16819103727

XFX HD-577X-ZNFC Radeon HD 5770 1GB http://www.newegg.com/Product/Product.aspx?item=N82E16814150462

I will probably xfire the 5770 later down the road and I'm not sure which MB to purchase. I'm looking for the 100ish price point (no more than 140) I was looking at boards with the AMD 790FX, AMD 790GX and AMD 790X North bridges... I haven't been able to find a quality FX MB in my price range, and I'm concerned with the downgrade to 8x pci-e if I crossfire with the GX or X ... I've read that the 8x vs 16x differences are less than 10% (which is acceptable) but all the places where I've read that are a few years old... any suggestions? In addition any memory suggestions, the timing stuff is all greek to me. Thanks for your help!
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More about phenom motherboard selection assistance
  1. go for DDR3 and timings of 7 or 8

    for mobo

    http://www.newegg.com/Product/Product.aspx?Item=N82E16813131398

    this is good
  2. Upendra09,
    Thanks for the advice on the memory... I'll check through the memory pages for ddr3 with those timings...

    Anyone have any current news on PCI-e 8x vs 16x? Still trying to decide on the 790FX(full 16x pci-e in crossfire) or 790X(8x when in Crossfire)... the only 790fx i could find in my range was the

    Dfi Lan Boy
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813136057

    and I've never tried DFI... and heard iffy reviews on this specific board (runs hot among other complaints...) input appreciated!
  3. they make boards mainly for gaming and the aren't as popular

    if you can stretch your budget this is also very good

    http://www.newegg.com/Product/Product.aspx?Item=N82E16813131392R

    this is for 150

    the cheapest i could find
  4. Upendra09 said:
    they make boards mainly for gaming and the aren't as popular

    if you can stretch your budget this is also very good

    http://www.newegg.com/Product/Product.aspx?Item=N82E16813131392R

    this is for 150

    the cheapest i could find



    Thanks again for the input Upendra09... I was looking at that one too... what do you think of;

    MSI 790FX-GD70
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813130223R
    can accept DDR3 800/1066/1333/1600*/1800*/2133*(OC)

    ---- also thinking of these 790x boards (still wondering the performance difference)----

    ASUS M4A79XTD EVO
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813131402R
    http://www.msi.com/index.php?func=proddesc&maincat_no=1&cat2_no=&cat3_no=&prod_no=1740

    GIGABYTE GA-MA790XT-UD4P
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813128378
    http://www.gigabyte.us/Products/Motherboard/Products_Overview.aspx?ProductID=3012

    ---- and finally heres what I came up with for memory (i think these are all identical, but I honestly don't know jack about memory)----

    http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=2010170147%201052430325%201052528354%201052315794&StoreType=-1&CompareItemList=N82E16820227478%2cN82E16820220286%2cN82E16820231276%2cN82E16820226113%2cN82E16820220431&bop=And

    you tell me what to get out of those 4 boards, and 4 memory selections and this is as good as a closed topic! Thanks again!
  5. and for those who stuble across this and might be wondering what the difference between the 790x and 790fx is...

    790FX:
    PCI-E 2.0 with up to 4 gpus
    in 2x16,
    or 1x16 + 2x8
    or 4x8

    790X:
    PCI-E 2.0 with up to two cards
    in 1x16
    or 2x8

    and the 790gx has on board video... I THINK its 2x 8x in xfire mode (NOT Positive)
  6. You can read this Article http://www.tomshardware.com/reviews/p55-pci-express-scaling,2517.html PCI Express And CrossFire Scaling on intel P55 motherboard, it should be pretty much the same on 8x+8x PCI-E 2.0 AMD platform.

    Or just get this combo AMD Phenom II x4 965 + MSI 790FX-GD70 AM3 AMD 790FX
    http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.322820
    you save $30 pretty nice combo IMO.

    And yes only 790FX is 16x+16x, 790GX and 790X are 8x+8x.
  7. Thanks for the article... I was looking for something to read like that!
  8. ok NO don't go for open box

    open box= very bad

    they are mostly refurbished motherboard that haven't be re certified for use and most of the time newegg won't take it back

    in the 4 links you provided i would go with the Gigabyte
    however, it might be more expensive

    the difference between Crossfire at dual 8x and 16x is around 10 percent if i recall correctly
  9. Upendra09 said:
    ok NO don't go for open box

    open box= very bad

    they are mostly refurbished motherboard that haven't be re certified for use and most of the time newegg won't take it back

    in the 4 links you provided i would go with the Gigabyte
    however, it might be more expensive

    the difference between Crossfire at dual 8x and 16x is around 10 percent if i recall correctly



    hrmm I didnt know they were sticklers on the open box... definitely something to take into consideration... I'm leaning pretty heavily towards that Gigabyte, glad that was your recommendation... I figure 10% is something I can live with when I crossfire...

    as for memory... I've never used g.skill or OCZ. Everyone seems to swear by them, whats the straight dope the way you see them?

    I was leaning towards;
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820227478

    but the reviews are all over the spectrum and therefore worrisome... i figure its cheapest with decent timings, and I can burn it in for a day using memtest to make sure its not bunk... do you have any input on that or does that sound logical?
  10. Best answer
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820227346

    this is better, lower latency and less price

    just OC this RAM and you will have a smooth setup
  11. Best answer selected by retox9k.
  12. Heres what I went with;

    GIGABYTE GA-MA790XT-UD4P
    http://www.newegg.com/Product/Product.aspx?Item=N82E16813128378

    XFX HD-577X-ZNFC Radeon HD 5770 1GB
    http://www.newegg.com/Product/Product.aspx?Item=N82E16814150462

    CORSAIR CMPSU-650TX 650W
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

    AMD Phenom II X4 955
    http://www.newegg.com/Product/Product.aspx?Item=N82E16819103808

    OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333
    http://www.newegg.com/Product/Product.aspx?Item=N82E16820227478

    $650 out the door... I went with the Platinum instead of the gold due to a pricing bundle and I hope that the PSU is big enough to crossfire 2 mid range cards... Thanks again Upendra09!
  13. Very nice , Very nice

    and no problem
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